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BOSTON MARATHON 2023

Heather Kaplan

Bib: 17256•F

MA

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Division (F18-39)
#0 / 4884
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:54
Rank: #18634
Start → 5K
8:39/mi
26:54 split
10K· 6.21 mi
54:22
Rank: #19403 (-769)
5K → 10K
8:50/mi
27:28 split
15K· 9.32 mi
1:22:34
Rank: #19913 (-510)
10K → 15K
9:05/mi
28:12 split
20K· 12.43 mi
1:49:52
Rank: #19541 (+372)
15K → 20K
8:47/mi
27:18 split
Half· 13.11 mi
1:55:56
Rank: #19562 (-21)
20K → Half
8:54/mi
6:04 split
25K· 15.53 mi
2:17:08
Rank: #19244 (+318)
Half → 25K
8:45/mi
21:12 split
30K· 18.64 mi
2:44:51
Rank: #18812 (+432)
25K → 30K
8:55/mi
27:43 split
20M
2:57:18
Rank: #18702 (+110)
30K → 20M
9:10/mi
12:27 split
21M
3:06:27
Rank: #18419 (+283)
20M → 21M
9:09/mi
9:09 split
35K· 21.75 mi
3:13:01
Rank: #18353 (+66)
21M → 35K
8:47/mi
6:34 split
23M
3:24:29
Rank: #18268 (+85)
35K → 23M
9:09/mi
11:28 split
24M
3:33:54
Rank: #18306 (-38)
23M → 24M
9:25/mi
9:25 split
40K· 24.85 mi
3:41:26
Rank: #18197 (+109)
24M → 40K
8:49/mi
7:32 split
25.2M
3:44:45
Rank: #18169 (+28)
40K → 25.2M
9:37/mi
3:19 split
Finish· 26.22 mi
3:54:36
Rank: #18294 (-125)
25.2M → Finish
9:40/mi
9:51 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:55:56
Pace8:51 /mi
2nd Half
Distance13.11 mi
Time1:58:40
Pace9:03 /mi
📊Positive Split: 2.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:0126:548:3926:54
8:39
-
10K
6.21 mi11:45:2954:228:4527:28
8:50
+0:11
15K
9.32 mi12:13:411:22:348:5228:12
9:05
+0:15
20K
12.43 mi12:40:591:49:528:5027:18
8:47
-0:18
Half
13.11 mi12:47:031:55:568:516:04
8:54
+0:07
25K
15.53 mi13:08:152:17:088:5021:12
8:45
-0:09
30K
18.64 mi13:35:582:44:518:5127:43
8:55
+0:10
20M
20.00 mi13:48:252:57:188:5212:27
9:10
+0:15
21M
21.00 mi13:57:343:06:278:539:09
9:09
-0:01
35K
21.75 mi14:04:083:13:018:536:34
8:47
-0:22
23M
23.00 mi14:15:363:24:298:5311:28
9:09
+0:22
24M
24.00 mi14:25:013:33:548:559:25
9:25
+0:16
40K
24.85 mi14:32:333:41:268:557:32
8:49
-0:36
25.2M
25.20 mi14:35:523:44:458:553:19
9:37
+0:48
Finish
26.22 mi14:45:433:54:368:579:51
9:40
+0:03

Checkpoints & Pacing

📈Pace Line

Pace Progression

Track your pace changes throughout the race. Dot colors mark your quickest to easiest segments, relative to your own pace.

Fastest Pace

8:39 /mi

Average Pace

8:57 /mi

Slowest Pace

9:40 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:41:26

94% of race

Time at Steady Pace

13:10

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:57 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

🎨Heatmap

Pace Heatmap

Where you sped up and eased off relative to your own pace across the race. Colors are relative to your own range, not to other runners.

Loading...
0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Click or hover over segments to see details

✨Sparklines

Checkpoint Splits with Pace Trends

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi11:18:0126:548:3926:54
8:39
#18634
10K
6.21 mi11:45:2954:228:4527:28
8:50
#19403
15K
9.32 mi12:13:411:22:348:5228:12
9:05
#19913
20K
12.43 mi12:40:591:49:528:5027:18
8:47
#19541
Half
13.11 mi12:47:031:55:568:516:04
8:54
#19562
25K
15.53 mi13:08:152:17:088:5021:12
8:45
#19244
30K
18.64 mi13:35:582:44:518:5127:43
8:55
#18812
20M
20.00 mi13:48:252:57:188:5212:27
9:10
#18702
21M
21.00 mi13:57:343:06:278:539:09
9:09
#18419
35K
21.75 mi14:04:083:13:018:536:34
8:47
#18353
23M
23.00 mi14:15:363:24:298:5311:28
9:09
#18268
24M
24.00 mi14:25:013:33:548:559:25
9:25
#18306
40K
24.85 mi14:32:333:41:268:557:32
8:49
#18197
25.2M
25.20 mi14:35:523:44:458:553:19
9:37
#18169
Finish
26.22 mi14:45:433:54:368:579:51
9:40
#18294
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi186346957695720841(Top 78%)8146(Top 71%)8146(Top 167%)
10K6.21 mi3.10 mi19403-7697401-4447401-44420143(Top 76%)7780(Top 68%)7780(Top 159%)
15K9.32 mi3.11 mi19913-5107684-2837684-28320841(Top 78%)8146(Top 71%)8146(Top 167%)
20K12.43 mi3.11 mi19541+3727449+2357449+23518605(Top 70%)6854(Top 60%)6854(Top 140%)
Half13.11 mi0.68 mi19562-217463-147463-1419957(Top 75%)7630(Top 67%)7630(Top 156%)
25K15.53 mi2.42 mi19244+3187264+1997264+19917649(Top 66%)6372(Top 56%)6372(Top 130%)
30K18.64 mi3.11 mi18812+4327035+2297035+22916785(Top 63%)5946(Top 52%)5946(Top 122%)
20M20.00 mi1.36 mi18702+1106982+536982+5317387(Top 65%)6386(Top 56%)6386(Top 131%)
21M21.00 mi1.00 mi18419+2836839+1436839+14314268(Top 54%)4645(Top 41%)4645(Top 95%)
35K21.75 mi0.75 mi18353+666807+326807+3216869(Top 63%)6213(Top 54%)6213(Top 127%)
23M23.00 mi1.25 mi18268+856770+376770+3716873(Top 63%)6223(Top 54%)6223(Top 127%)
24M24.00 mi1.00 mi18306-386805-356805-3518918(Top 71%)7397(Top 65%)7397(Top 151%)
40K24.85 mi0.85 mi18197+1096755+506755+5015178(Top 57%)5408(Top 47%)5408(Top 111%)
25.2M25.20 mi0.35 mi18169+286742+136742+1315830(Top 59%)5786(Top 51%)5786(Top 118%)
Finish26.22 mi1.02 mi18294-1256818-766818-7620686(Top 78%)8396(Top 74%)8396(Top 172%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 78%
×21stories
+97ft-345ft

Overall

20841

Females

8146

F18-39

8146

5K→10K

3.1 - 6.2 mi

Top 76%
×5stories
+79ft-138ft

Overall

20143

Females

7780

F18-39

7780

10K→15K

6.2 - 9.3 mi

Top 78%
×3stories
+67ft-78ft

Overall

20841

Females

8146

F18-39

8146

15K→20K

9.3 - 12.4 mi

Top 70%
×5stories
+106ft-86ft

Overall

18605

Females

6854

F18-39

6854

20K→Half

12.4 - 13.1 mi

Top 75%
×2stories
+19ft-37ft

Overall

19957

Females

7630

F18-39

7630

Half→25K

13.1 - 15.5 mi

Top 66%
×4stories
+66ft-88ft

Overall

17649

Females

6372

F18-39

6372

25K→30K

15.5 - 18.6 mi

Top 63%
×9stories
+181ft-148ft

Overall

16785

Females

5946

F18-39

5946

30K→20M

18.6 - 20.0 mi

Top 65%
×5stories
+64ft-50ft

Overall

17387

Females

6386

F18-39

6386

20M→21M

20.0 - 21.0 mi

Top 54%
×8stories
+106ft-24ft

Overall

14268

Females

4645

F18-39

4645

21M→35K

21.0 - 21.8 mi

Top 63%
×7stories
+17ft-86ft

Overall

16869

Females

6213

F18-39

6213

35K→23M

21.8 - 23.0 mi

Top 63%
×5stories
+23ft-63ft

Overall

16873

Females

6223

F18-39

6223

23M→24M

23.0 - 24.0 mi

Top 71%
×6stories
+12ft-82ft

Overall

18918

Females

7397

F18-39

7397

24M→40K

24.0 - 24.9 mi

Top 57%
×1story
+6ft-20ft

Overall

15178

Females

5408

F18-39

5408

40K→25.2M

24.9 - 25.2 mi

Top 59%
×1story
+13ft-16ft

Overall

15830

Females

5786

F18-39

5786

25.2M→Finish

25.2 - 26.2 mi

Top 78%
×2stories
+22ft-21ft

Overall

20686

Females

8396

F18-39

8396

Passing Analysis

Category:
Athletes Passed
2209
Passed By
1869
Net Change
+340
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18634
5K → 10K100869-769#18634#19403
10K → 15K48558-510#19403#19913
15K → 20K40533+372#19913#19541
20K → Half2041-21#19541#19562
Half → 25K33820+318#19562#19244
25K → 30K44311+432#19244#18812
30K → 20M14737+110#18812#18702
20M → 21M2874+283#18702#18419
21M → 35K8115+66#18419#18353
35K → 23M12843+85#18353#18268
23M → 24M3977-38#18268#18306
24M → 40K1189+109#18306#18197
40K → 25.2M3810+28#18197#18169
25.2M → Finish17142-125#18169#18294
TOTALS22091869+340
📊

Passing Visuals

Category:
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🔥Passing Intensity

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing